Mr M's Edexcel GCSE Mathematics 1MA0 Higher Tier Paper 2 Answers June 20141. Midpoint
(4, 5.5) (2 marks)
2. Scatter graph
a) Plot 2 points (1 mark)
b) As the average temperature increases the unit of gas used decreases (negative correlation will be accepted) (1 mark)
c) 6 (approx.) (2 marks)
3. Using a calculator
140289 or 2.064285714 (2 marks)
4. Circumference
28.3 (2 marks)
5. Translation
Translation by
(−35) (2 marks)
6. Driving home
2.15 p.m. (3 marks)
7. Parallel lines
54 degrees because angles at a point on a straight line add up to 180 degrees and alternate angles are equal or corresponding angles are equal (depending on which angles you found) (3 marks)
8. Survey
a) 0.29 (2 marks)
b) 195 (2 marks)
c) You may get different age groups at different times of the day and 10 is a very small sample size (2 marks)
9. Trapezium
317 (4 marks)
10. Indices
a)
p6 (1 mark)
b)
t5 (1 mark)
c) 6 (1 mark)
d) 4 (1 mark)
11. Driveway
£186.20 (5 marks)
12. Arithmetic sequence
a)
5n−1 (2 marks)
b)
6n−2n2 (1 mark)
13. Inequalities
a) -4, -3, -2, -1, 0 (2 marks)
b) x > 4.5 (2 marks)
14. Party
£25.80 (5 marks)
15. Turbines
a) 7.5 (3 marks)
b) 217 degrees (4 marks)
16. Standard form
1.875×108 (2 marks)
17. Similar shapes
a) 7.5 (2 marks)
b) 8 (2 marks)
18. Katie
a) £209.70 (3 marks)
b) Pay increase £25.50. ticket increase £25, she is 50p per week better off (3 marks)
19. 3D coordinates
(2,34,1) (2 marks)
20. Mean science marks
75.5 (3 marks)
21. Algebra
a)
y2−7y+10 (2 marks)
b) Proof (3 marks)
22. Biased coin
Yes she is correct (the probability is 0.064) (3 marks)
23. Stratified sample
a) A sample that is taken a particular part of the population rather than the whole (1 mark)
b) 26 (2 marks)
24. Inverse proportion
8 (3 marks)
25. Hemisphere and cone
302 (3 marks)
26. Quadratic simultaneous equations
x = 6 and y = 0
x = -3.6 and y = -4.8 (5 marks)
27. Parallelogram
43.9 (5 marks)